Document Type and Number:
Japanese Patent JPS5278472
Kind Code:
U
Application Number:
JP16644575U
Publication Date:
June 11, 1977
Filing Date:
December 10, 1975
Export Citation:
International Classes:
G04C3/00; G04G3/00; G04G99/00; H03K21/18; (IPC1-7): G04C3/00; H03K21/18